CN105017622A - Nanometer-montmorillonite-supported crosslinked-starch-modified magnetic low-density-polyethylene degradation mulch film and preparation method thereof - Google Patents
Nanometer-montmorillonite-supported crosslinked-starch-modified magnetic low-density-polyethylene degradation mulch film and preparation method thereof Download PDFInfo
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- CN105017622A CN105017622A CN201510442357.XA CN201510442357A CN105017622A CN 105017622 A CN105017622 A CN 105017622A CN 201510442357 A CN201510442357 A CN 201510442357A CN 105017622 A CN105017622 A CN 105017622A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention relates to the technical field of degradation film materials, and concretely relates to a nanometer-montmorillonite-supported crosslinked-starch-modified magnetic low-density-polyethylene degradation mulch film and a preparation method thereof. According to the master batch of the mulch film, a combined solution of nanometer montmorillonite, silica sol and the like is utilized for adsorbing and fixing crosslinked starch, the dried mixed powder is excellent in compatibility with polyethylene after being processed by a silane coupling agent, and thus the disadvantages that a conventional starch-polyethylene degradation film is long in degradation period and insufficient in degradation are improved, the usage amount of crosslinked starch can be increased and the production cost is reduced, and added nanometer ferriferrous oxide enables the film to possess certain magnetism and helps to improve oxygen concentration in soil, promote microbe propagation and promote plastic degradation. The mulch film prepared according to the preparation method is good in film forming performance, is capable of retaining water and breathing freely, is strong in gluing force to soil, is beneficial for microbe propagation, helps to improve soil environment and accelerate degradation speed, does not contain toxic or harmful substances, is safe in compositions, and is economical and environment-friendly.
Description
Technical field
The present invention relates to degradative membrane field of material technology, be specifically related to a kind of magnetic Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of nano imvite and preparation method thereof.
Background technology
Mulch film, as its name suggests, be membrane covering film, in order to improve the soil moisture, keep soil moisture, maintain Soil structure, prevent the disease that pest attacks crop and certain micro-organisms cause, Promoting plant growths etc., current film-mulching technique obtains extensive popularization in agricultural, and effect of increasing production is obvious.Because now a large amount of mulch film used is nondegradable macromolecular compound, neither by microbial attack, can not disintegrate, insoluble pollution hazard will inevitably be brought to descendant if things go on like this.Therefore, study degradable mulch to come into one's own gradually.
Starch is the abundant renewable resources of nature, and it is nontoxic, fully biodegradable, but poor mechanical property and water resistance but limit it applies.Starch is carried out modification by some researchs at present, by itself and synthetic resins or degradable macromolecular material is blended makes degradation material, but these materials are subject to the restriction of its mechanical property, degradation cycle and environment for use and processing technology, the use properties of product is barely satisfactory.
Summary of the invention
The object of the invention is to, prepare a kind of magnetic Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of nano imvite, the economic environment-friendly degradable mulch film that a kind of film forming properties is good, biological degradation is abundant to obtain, raw material availability is high, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of magnetic Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of nano imvite, it is characterized in that, this mulch film is made up of the raw material of following weight part: Low Density Polyethylene 40-50, cross-linking starch 6-8, nano imvite 8-10, konjak glucomannan 1-2, nano ferriferrous oxide 0.6-0.8, solid content are silicon sol 10-12, the ethylene-acrylic acid copolymer 4-5 of 20-25%, carboxymethyl chitosan 0.2-0.3, alkyl glycoside 0.1-0.2, silane coupling agent 0.1-0.2, water 25-30.
Described a kind of preparation method by the magnetic Low Density Polyethylene degradative plastic film of the loaded cross-linked starch conversion of nano imvite, it is characterized in that, described preparation method is:
(1) first konjak glucomannan, alkyl glycoside, cm-chitosan are dropped into and be heated in the water of 50-60 DEG C, be stirred to it to dissolve completely, drop into cross-linking starch, silicon sol subsequently, and solution is heated to 60-80 DEG C, after stirring gelatinization 20-30min, nano imvite, nano ferriferrous oxide are dropped in mixed solution, by gained slurry grinding distribution 20-30min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain magnetic Nano montmorillonite load cross-linking starch mixture for subsequent use;
(2) step (1) gained magnetic Nano montmorillonite load cross-linking starch mixture and silane coupling agent are uniformly mixed; add other leftover materials again; fully mix granulation in rear input singe screw tablets press, gained particle drops in inflation film manufacturing machine and blows film forming, to obtain final product.
Degradative plastic film prepared by the present invention take low-density polyethylene material as major ingredient, add cross-linking starch to improve its biological degradability, in order to improve cross-linking starch and poly consistency, utilize the nano imvite with favourable absorption, the fixing cross-linking starchs of composite solution absorption such as silicon sol, dried mixed powder is excellent with polyethylene consistency after silane coupling agent process, improve traditional starch-polyethylene degradation film degradation cycle long, to degrade insufficient shortcoming, the consumption of cross-linking starch can be strengthened, reduce production cost, the nano ferriferrous oxide added makes film have certain magnetic, the oxygen concn in soil can be improved, promote the breeding of microorganism, promote plastic degradation, the mulch film film-forming properties that this invention prepares is good, and water conservation is breathed freely, strong with soil adhesive force, contributes to microbial reproduction, improves edatope, accelerates degradation speed, not containing hazardous and noxious substances, and composition safety, economic environmental protection.
Embodiment
Embodiment
The mulch film of the present embodiment is made up of the raw material of following weight part: Low Density Polyethylene 45, cross-linking starch 7, nano imvite 8, konjak glucomannan 1.5, nano ferriferrous oxide 0.6, solid content are silicon sol 10, ethylene-acrylic acid copolymer 4, carboxymethyl chitosan 0.2, alkyl glycoside 0.1, silane coupling agent 0.1, the water 28 of 25%.
The preparation method of this degradative plastic film is:
(1) first konjak glucomannan, alkyl glycoside, cm-chitosan are dropped into and be heated in the water of 50-60 DEG C, be stirred to it to dissolve completely, drop into cross-linking starch, silicon sol subsequently, and solution is heated to 60-80 DEG C, after stirring gelatinization 25min, nano imvite, nano ferriferrous oxide are dropped in mixed solution, by gained slurry grinding distribution 25min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain magnetic Nano montmorillonite load cross-linking starch mixture for subsequent use;
(2) step (1) gained magnetic Nano montmorillonite load cross-linking starch mixture and silane coupling agent are uniformly mixed; add other leftover materials again; fully mix granulation in rear input singe screw tablets press, gained particle drops in inflation film manufacturing machine and blows film forming, to obtain final product.
The sample that thickness is 0.01mm made by mulch film obtained by the present embodiment, follows the result that relevant criterion carries out performance test to be:
| Test item | Detected result |
| Tensile strength (longitudinal direction) | 20.2 |
| Tensile strength (transverse direction) | 18.4 |
| Transmittance | 82.3% |
| 30d landfill rate of weight loss | 22.4% |
| 120d landfill rate of weight loss | 50.2% |
Claims (2)
1. the magnetic Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of nano imvite, it is characterized in that, this mulch film is made up of the raw material of following weight part: Low Density Polyethylene 40-50, cross-linking starch 6-8, nano imvite 8-10, konjak glucomannan 1-2, nano ferriferrous oxide 0.6-0.8, solid content are silicon sol 10-12, the ethylene-acrylic acid copolymer 4-5 of 20-25%, carboxymethyl chitosan 0.2-0.3, alkyl glycoside 0.1-0.2, silane coupling agent 0.1-0.2, water 25-30.
2. a kind of preparation method by the magnetic Low Density Polyethylene degradative plastic film of the loaded cross-linked starch conversion of nano imvite as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first konjak glucomannan, alkyl glycoside, cm-chitosan are dropped into and be heated in the water of 50-60 DEG C, be stirred to it to dissolve completely, drop into cross-linking starch, silicon sol subsequently, and solution is heated to 60-80 DEG C, after stirring gelatinization 20-30min, nano imvite, nano ferriferrous oxide are dropped in mixed solution, by gained slurry grinding distribution 20-30min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain magnetic Nano montmorillonite load cross-linking starch mixture for subsequent use;
(2) step (1) gained magnetic Nano montmorillonite load cross-linking starch mixture and silane coupling agent are uniformly mixed; add other leftover materials again; fully mix granulation in rear input singe screw tablets press, gained particle drops in inflation film manufacturing machine and blows film forming, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442357.XA CN105017622A (en) | 2015-07-23 | 2015-07-23 | Nanometer-montmorillonite-supported crosslinked-starch-modified magnetic low-density-polyethylene degradation mulch film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442357.XA CN105017622A (en) | 2015-07-23 | 2015-07-23 | Nanometer-montmorillonite-supported crosslinked-starch-modified magnetic low-density-polyethylene degradation mulch film and preparation method thereof |
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| CN105017622A true CN105017622A (en) | 2015-11-04 |
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| CN201510442357.XA Pending CN105017622A (en) | 2015-07-23 | 2015-07-23 | Nanometer-montmorillonite-supported crosslinked-starch-modified magnetic low-density-polyethylene degradation mulch film and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722359A (en) * | 2017-04-24 | 2018-11-02 | 南京理工大学 | A kind of preparation method that carboxymethyl chitosan is modified montmorillonite used |
| CN116589511A (en) * | 2023-05-26 | 2023-08-15 | 烟台众德集团有限公司 | Preparation method of seaweed oligosaccharide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| CN103980548A (en) * | 2014-05-16 | 2014-08-13 | 江苏省农业科学院 | Starch-based degradable agricultural mulching film and preparation method thereof |
-
2015
- 2015-07-23 CN CN201510442357.XA patent/CN105017622A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| CN103980548A (en) * | 2014-05-16 | 2014-08-13 | 江苏省农业科学院 | Starch-based degradable agricultural mulching film and preparation method thereof |
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| 刘德峥等: "《精细化工生产技术（第二版）》", 30 September 2011, 化学工业出版社 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722359A (en) * | 2017-04-24 | 2018-11-02 | 南京理工大学 | A kind of preparation method that carboxymethyl chitosan is modified montmorillonite used |
| CN116589511A (en) * | 2023-05-26 | 2023-08-15 | 烟台众德集团有限公司 | Preparation method of seaweed oligosaccharide |
| CN116589511B (en) * | 2023-05-26 | 2023-09-19 | 烟台众德集团有限公司 | Preparation method of seaweed oligosaccharide |
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